If animating a rapid transition duration to achieve a rapid "flicker" effect, make sure FPS isn't misaligned with your selected Frames per Second export setting, which will cause the transition to render more slowly than expected.

Example

Intended effect

Rendered effect

Cause

Misalignment between transition timing and frame speed

How to fix

Determine closest duration to your ideal level that is also a multiple of your chosen frame speed

In our example, we've set it at 80ms, which is the closest number to our ideal rate of 75fps that is also a multiple of our chosen 40ms frame speed (1000ms / 25fps setting = 40ms frame speed)

Align after-delay duration & FPS settings